Cement-mixer.



Patented Apr. 5, 1910.

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A. HEINBERG.

CEMENT MIXER.

APPLICATION FILED we. 9. 1909.

Patented Apr. 5, 1910.

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ADOLPH HEINBERG, 0F PIERSON, IOWA, ASSIGNOR OF ONE-HALF TO B. M. TROUT, OF PIERSON, IOWA.

CEMENT-MIXER.

Specification of Letters Patent.

Patented Apr. 5, 1910.

Application filed August 9, 1909. Serial No. 512,052.

To all whom it may concern:

Be it known that I, AooLrI-I Ilmxnnno, of Pierson, county of WVoodbury, and State of Iowa, have invented a new and useful Improvement in Cement-Mixers, of which the following is a specification.

This invention relates to rotary mixers for cement, grout, concrete, and the like.

' The object of the invention is to simplify the construction and operation of machines of this character to an appreciable extent and thereby render the same more eflicient in use, less expensive to operate, and more durable.

A further object of the invention is to provide a rotary mixer with features and instrumentalities whereby a more thorough and intimate intermingling and mixing of the ingredients may be effected, and, at the same time, so to construct the mixer that it is rendered capable of long-continued operation.

A still further object, and one to which I attribute the pronounced success of my machine, is to provide a mixing apparatus in which the parts shall be of peculiar arrangement and proportions relatively to each other and to the structure in its entirety.

With these objects in view, the invention resides in the novel details of construction and arrangement of parts as fully hereafter described and claimed.

Figure 1 is a perspective view of my improved mixer and, as mounted for transportation from place to place; Fig. 2 is a vertical longitudinal sectional view taken through the center of the structure, the supporting wheels of the vehicle being omitted. Fig. 3 is a sectional view on the line 3-3, Fig. 1, of the mixing cylinder. Fig. 1 is a fragmentary perspective view with a portion of the wall of the mixing cylinder broken away to show the interior arrange ment of the deflecting angle-irons and lumpbreaking spikes or teeth; Fig. 5 is an end elevation looking toward the feeding end of the cylinder.

In these drawings :The numeral 1 designates a supporting frame comprising side and end bars 1 and 1 respectively. This frame is preferably mounted on wheels A, as shown, whereby the mixer may be conveyed from place to place. Four uprights or posts 2, 2, are arranged at the respective corners of the frame and, at their upper ends, support a top 8, there being braces 2 to maintain the same in proper rigid position. Extending transversely of the frame 1 and beyond the outer sides thereof are two sustaining bars t, 1, toward the ends of the former of which are secured central uprights or posts -1 which also serve to support the top Upon the extended ends of these bars are platforms 1, one of these being utilized to support an engine 5 (hereinafter referred to) for driving the apparatus, and on the other of which is supported a box 1 for tools or the like. Above this box and suitably secured to the parts is a water tank 6 from which leads a piping 7, as shown. Upon each of the side bars of the frame 1, and toward the ends thereof, are blocks 8, 8, on which are journaled grooved wheels or rollers 9, 9.

Disposed longitudinally of the frame 1 is a cylindrical mixer 10, having one end (the feeding end) provided with a truncated conical hood 12, the same having an opening of sullicient dimensions to permit the ingredients that are to be mixed to be passed into the cylinder, as by being shoveled or otherwise supplied in predetermined quantities. The opposite end 13 of this mixing cylinder is open to permit discharge of the mixture from the cylinder. Encircling the cylinder toward its ends are ribs or other form of circumferential guides 14: which are designed to be engaged by the grooved wheels or rollers 9, and whereby the mixing cylinder is supported for rotary movement. Such rotary movement is effected by means of the engine 5, already referred to, and which may be of any preferred type and size. F or convenience I have arranged the engine in close proximity to the mixing cylinder and on one of the platforms 1. To aid in sustaining the weight of the platform and engine, I may provide brace-rods 15 which are connected to the platform and to the top 3, as shown.

Suitably mounted upon the two rear upright posts are inclined bars 16, and upon these is supported a transverse shaft 17 which has, on one end, a pulley 18, over which a belt 19 passes, and which belt is actuated by a small pulley 20 carried by the drive-shaft 21 of the engine 5. The shaft 17 also is provided with a pinion 22 which meshes with a second pinion 23 carried by a longitudinally-extending shaft 21 suitably supported above the mixing cylinder. Upon this last-mentioned shaft is keyed a sprocketwheel 24*, over which passes an endless chain 25 that encircles the mixing cylinder and engages a circumferential toothed band 26 ;1

that encircles the cylinder at its central portion. By means of this sprocketchain (which is driven by the shafts 24 and 17 pulley 18, belt 19, etc}; the mixing cylinder is rotated and atany esirable speed.

Suitably secured to the interior walls of the mixing cylinder, (and in what I shall designate the mixing chamber) are a plurality of deflecting angle-irons or blades 27, there being in this instance four. The projecting operative surfaces of these are preferably arranged at an angle to the longitudinal axis of the cylinder, and extend from the inlet end 12 of the cylinder, terminating some distance from the discharge end of the cylinder, and as shown. Arranged in alinement with these deflectors and in the space between the ends thereof and the end of the cylinder are a series of spikes or projections 28 separated from each other, as shown. It will be understood that, as these spikes or projections 28 are arranged toward the discharge end of the cylinder, their function is to break up any lumps of the materials that. may form after the mass leaves the inlet-end of the cylinder and has been prepared in that part of the cylinder where the water is introduced. In other words, the materials being introduced into the hooded end of the cylinder, in dry form, and the cylinder being rotated and mixed, the spikes will break up any lumps that may have formed. The materials tend to move toward the discharge end of the cylinder and, when they come into contact with the inclined deflecting angleiron blades, they are repeatedly thrown from one side of the cylinder to the other. At the same time, water from the water-tank is forced into the cylinder through the piping and mixes the materials. To regulate the flow of such water, a globe-valve '7 is arranged on the piping 7, as usual in this class of apparatus.

The cylinder is of relatively greater length than is its diameter, whereby an extended travel of the ingredients is permitted, and during the course of such travel, said ingredients come in contact, in sequence, first, with the deflector blades and, then, with the lump-breaking spikes.

It is to be understood that the arrangement and proportions of the parts of the apparatus, as just described, contribute to a marked degree to the success with which my mixer can be operated. In other words, to the spiral or inclined arrangement of the deflector-blades, the disposition of the lumpbreaking spikes or projections in relation to, and in rear of the position of, said blades, and to proportions of the parts relative to same-a each other and the structure in its entirety, and as shown, I attribute in a great measure the successful results attending the operation of my improved apparatus: The inclined blades throw the mixture from side to side until it is thoroughly intermixed and, at the same time tend to move the mass gradually toward the discharge end of the cylinder after which the spikes break up any lumps that may have formed.

While the 'use of deflectors is not new with me, yet so far as I am aware the arrangement of the spikes and blades relatively and in the chamber is a novelty.

Having thus described my invention, the construction of its parts, and its mode of operation, what I claim and desire to secure by Letters Patent is 1. In a rotary mixer, a cylindrical mixing member, means for actuating the same, angled deflecting blades disposed within the mixing member, and a series of lump-breaking projections also disposed within the mixing member and in longitudinal alinement with and in a plane approximately parallel to that of the angled blades, whereby the ingredients are, in sequence, operated upon, first by the angled blades and, then, by the lump-breaking projections.

2. In a rotary mixer, a cylindrical member provided with a mixing chamber, and with inlet and discharge openings, means for rotating said member, angled deflecting blades disposed on the walls of said chamber and at an angle to the axis of said member, and a series of lump-breaking projections also disposed on said walls and in a plane approximately parallel to that of said blades, said series of projections extending for a distance less than the length of said blades.

3. In a rotary mixer, a cylindrical member provided with a mixing chamber, and with inlet and discharge openings, means for rotating said member, angled deflecting blades disposed on the walls of said chamber and at an angle to the axis of said member, a series of lump-breaking projections also dis posed on said walls and in a plane approximately parallel to that of said blades, said series of projections extending for a distance less than the length of said blades, and in alinement therewith.

4. The combination with a rotary mixin cylinder provided with a hooded inlet en an open-discharge end, and a mixing chamber, of angled deflecting blades mounted in said chamber, and a series of lump-breaking projections also disposed in said chamber and in a plane approximately parallel to that of said blades, and which blades occupy a position toward one end of the cylinder and in a position beyond said lump-breaking spikes and extend toward the discharge end of the cylinder.

5. The combination with a. portable to occupying a position beyond said spikes and tary mixing cylinder provided With a extending toward the discharge end of the hooded inlet end, and an open discharge cylinder. end, and a mixing chamber angled deflect- In testimony whereof I hereunto set my 5 ing blades mounted in said chamber and at hand this 22nd day of July, 1909, in the 5 an angle to the axis of said cylinder, and a presence of two attesting witnesses.

series of alined spikes also disposed in said ADOLPH I-IEINBERG. chamber and in relation to said blades, the Witnesses: former occupying a position toward the for- CHAS. WV. ELSER,

10 Ward end of the cylinder and the blades RAYMOND M. TROUT. 

